Cut-off.



o. 866,440. PATENTED SEPT. 17, 1907. G. W. DENIEF 6r L. B. HOWARD.

GUT-OFP.

APPLIoATIozr FILED 11.7.1906.

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I'JNITED sTArnsrArsNT olmos GEORGE W. DEN'IEF; OF LOWELL-AND LAURENCE B. HOWARD, OF LYNN, MASSAOHUSET'io.

CUT-OFF.

To all whom it may concemf .l

Be it known that we, GEORGE W. DENIEF and LAU- RENCE B. HOWARD, citizens of theUnited States of America, residing at Lowell and Lynn, respectively, in the counties of Middlesex and EssexZ respectively, and State of Massachusetts, .have invented new and useful Improvements in Cut-Offs, of which the following is a specification.

This invention relates to improvements in cut-offs for water, steam and other fluid service connections, the\ main object of the invention' being to provide a structure whereby the .valve and valve seat may be easily and conveniently removed when worn and a new valve or seat substituted therefor'without the necessity of disconnecting or otherwise .disturbing the casing, and whereby the casing may be used for an indennita pe-V riod and the cut-off `kept in eilicient condition by the simple process of applying anew valve or-va1ve seat from time to time as occasion requires."

A further object is to provide a construction of .parts formaintaining `tight joints between the parts of the ycut-off to effectually prevent leakage.

thereof. Fig. 6 is a t op plan view of the valve. Fig.`7

is a vertical section thereof. Fig. 8 is a sectional 'ew similar to Fig.l 1, showirig a modification in the c nstruction of the cutLoff. Fig. 9 is alike View, showing a' further modification in the construction of the cutoff.

Referring now more particularly "o o the drawings, 1

ldesignates the casing of the cut-off, provided with inlet and outlet es 2 and 3 separated by an intermediate partition or diaphragm 4 formed4 in its horizontal portion with a port or opening 5, the seatlwall oi which is ground to a smooth face and beveled at any desired angle. Thecasing is further provided with an upwardly extending neck 6 externally threaded for 'the reception of acap nut 7, the inner wall or the neck being cylindrical to snugly receive a barrel or cage 8 closed at top by a head 9.- The cap or head 9is adjustably connected with the body of the barrel, preferably by providing it with a depending annular iiangelO threaded A into the barrel. The edge o'i the head extends beyond the body of the barrel and is ground to form a smooth Specication of Letters Patent. .Application lefl April 7, 1906. Serial No. 310,501.'

va closed joint to assist Patentes sept. 17, 1907.

beveled face 11 to.s eat against a corresponding face 12 at the upper end o the neck 6.

The lower end of the barrel or cage 8 is slotted or cut 4away toform diametrically opposite ports 13 and intervening wings14 having inwardly extending tongues orprojections 15. [The tongues serve as means for connecting the barrel with a detachable valve seat 16, the

`said seat being provided with a ground beveled face 17 to engage the seat surface 5 and with a port 18 for the flow of the fluid therethrough. The upper portion of the valve s eat is contracted with respect to the body thereof and lis formed with a ange 19 overlying the body ofthe seat and producing an intermediate groove is provided with diametrically opposite slots 21 forml tongues 15 are'brought into alinement with the slots to project below the ange 19, so that by giving the valve 1 seat or barrel a quarter revolutionin either direction the tongues will be brought to lie beneath the fiange and v within the groove to connect the valve seat withthe barrel. By a'reverse movement of the barrel or valve seat, the latter may be readily disconnected from the barrel, as will be readily understood. rlhe upper sur# face ofthe valve seat is formed with a rounded seat rim 22 surrounding the'port 18. l From the head 9 rises a tubular extension 23 through which extends a valve stem 24, the upper end ol the' Y extension ybeing chambered to receive packing 25 and externallyfthreaded for the application of a cap nut '26 having ,a gland 27 to hold' the packing suitably compressed 'and in close contact with the stem. rIhe suitable form of operating handle 28, and its interme- 'diate portion is threaded, as at 29, to engage the lower lthreaded portion of the bore of the extension 23. Be-

tween said threaded portion o the bore and thepack' v ing chamber, the bore is enlarged and formed with a beveled 'upper seat face 30 adapted to be engaged by a beveled portion 31 on the valve stem when the latter is adjusted to hold the valve fully open, so as to form in preventing leakage through the extension..v

'A valve 32 is-detachably mounted upon the lowerend of the stem and 'comprises a disk formed with a 4bottom recess to receive a suitable packing 33 adapted i Vto directly engage the rim 22 of the valve seat. The

packing is retained in position by a threaded projeo tion 34 and a washer and securing nut 35. The upper faceof the valve disk is formed with a slot 346`communicating with an underlying wider groove 37,1both '85 I upper end of the stem carries a hand wheel or other 65 V 20 to receive'the tongues 15 oi the barrel. The ange the slot and groove opening at one end through theedge oi the disk and being adapted 'to receive a flange or head 37 on the lower end of the valve stern, whereby the stem is swiveled to the valve and the latter adapted to be readily applied thereto and removed therefrom in an obvious manner.

The valve is arranged to lnove within the lower end of the barrel and is vertically adjusted toward and from the valve seat by manipulating the siem.. It will bc observed that both the barrel and seat are clamped securely in position by the cap nut 7, which also insures a tight connection between the beveled portions ll and l2 to prevent leakage. By means ofthe thread; ed connection between the body of the barrel and extension 23 the head 9vmay be adjusted relative to the valve seat to compensate ior wear when occasion requires to hold the seat tightly withinI the partition `opening 5 and the head in close engagement with the upper end of the neck of the easing. Upon removing the uut 7, and drawing outwardly upon 'the stem 24, the valve, valve seat and barrel may be -simultaneously removed from the casing for the inspection and renewal of the valve and valve seat if occasion requires. By this means a new'valve r valve seat may be quickly and conveniently substituted for a worn one without the necessity of disconnecting or other Wise disturbing the casing, thus enabling the iatterto be used for an indeiinite period, and it will be apparent that the construction is such as to secure a tight connection between the parts of the cut-otite prevent leakage.

' Figs. 8 and 9 4we have shown modifications in the conf In the embodiment of the invention disclosed in struction oil the barrel and valve operating means, used in connection with a somewhat different form of casing having a longer neck 6. In Fig. 8 the neck is closed by a' cap nut 2Gand the barrel is' made in a single piece and without the upward extension 23, and is provided 'with a threaded `passage 38 in `which operates an enlarged threaded portion 39'on the valve stem, which latter is provided w-ith an ordinary b'ar handle 28. The cap nut is recessed to receive a packing washer 40 which closes the upper end of the passage 38 and forms -a fluid tight connection between the barrel and nut. In the construction shown in Fig. i) the stein is mounted to slide in a smooth opening in the barrel, and -a coiled spring 41 is provided for normally holding the saine depressed and the valve closed. The form oiucap and packing employed in this embodiment is substantially the same as that disclosed in Fig. S, except that the cap is provided with a flat upper face, while a different type of means for operating the valve stem to open the valve is provided, the same consisting of hand levers 28*l pivoted to the upper end oi the stem and provided with cam enlargements 28 to engage the at face of the nut, whereby,

. when the levers are .pressed together, the stem will be lifted to open the valve. Theconstruction and mode oi' application oi the valve and valve seat is Ithe same iuFigs. Sand 9 as that" disclosed in Figs. 1 to 7, inclusive, and the barrel isalso adapted to maintain a fluid said stern to engage said seat, said valve beingr slidnbly.

connected with the stem, whereby it may be applied and removed by lateral movement. i

2. in a cut-off, a casing having a partition port and a neck, a barrel fitted within the neck, said barrel being cut awa'y at its lower end to provide diametrically opposite ports and intervening wings, the latter having inwardly extending tongues, a valve seat fitted in/the partition port und provided with diumetrically oppositely grooved portions having overlianging flanges receiving and engaging said tongues, whereby said seat is adapted to be applied and removed from thebarrel by a partial rotary movement, a cap applied to the neckand holding the barrel and seat in position, a stem extending through the neck, and a valve carried by said stem to engage the valve seat.

n3. in a cut-off, a casing having a partition port and n neck, a removable valve seat fitting in said port, a barrel within the neck detachabiy connectedu at its lower end with said vulve scat, a cap closing the neck and holding the valve and seat in position, n stem extending through the cup und barrel and provided at its lower end with u head. and a vulve provided in its upper face with u rudial slot receiving the stern vandY having an underlying wider groove, said slot and groove opening at one side through the edges of the stem, whereby the stem is swiveled to the valve and the latter adapted to be applied and removed by a lateral sliding motion.

4. In a cut-ofi', a casing having a partition lport and a neck; the upper end of the neck being internally beveled. al

valve seat fitting in said partition port, a barrel within the neck having its lower end provided with ports and projections engaging the valve seat, whereby the latter is adapted to be applied thereto and removed therefrom by partial rotary movement, the upper end of the barrel being formed with an outwardly extending beveled portion to engage the beveled portionof the neck, a cap closing the neck and lholdingr the bar-rei in'seating position, a valve 'operating in the barrel, and a stem connected with the valve and extending through the barrel and cap.

5. A eut-oif comprising a casing having a partition port and a neck, the latter provided with a joint face, a barrel tltted within the neck a head adjustabiy connected with and closing the vtop ofthe barrel and having a cooperating joint face, a valve seat fitted in the partition port and dctuchably connected with the barrel, a cap closing the neck and clampingr the barrel and seat in position, a stem extending through the barrel head and cap, and a valve carried by the stemfor engaging said seat.

6. In a cut-ot, n casing having a partition port and a 'nected with the valve seat a detachrble hend closingr the upper end of the barrel and extended through the opening 

